Hi Nicolas, 4743d43 (Properly handle ‘org-tag-persistent-alist’, 2016-04-17) removed the initial value for org-clock-current-task:
- (defvar org-clock-current-task nil) + (defvar org-clock-current-task) As a result, org-clock-current-task is undefined if org-clock.el is not yet loaded, leading to org-agenda-mark-clocking-task signaling a void-variable error when org-agenda is called. Debugger entered--Lisp error: (void-variable org-clock-current-task) (if org-clock-current-task (progn (save-restriction ...))) org-agenda-mark-clocking-task() ... call-interactively(org-agenda nil nil) command-execute(org-agenda) -- Kyle